Find the x-intercept of the tangent line to the graph of f at the point P(0,f(0)) when f(x)= e^-x(5cosx+2sinx)

Answers

Answer 1
f ( 0 ) = e^0 * ( 5 cos 0 + 2 sin 0 = = 1 * 5 = 5
f ` ( x ) = - e^(-x) * ( 5 cos x + 2 sin x ) + e^(-x) * ( - 5 sin x + 2 cos x ) =
( using the chain rule ) 
= e^(-x) * ( - 5 cos x - 2 sin x - 5 sin x + 2 cos x ) =
= e^(-x) * ( - 3 cos x - 7 sin x )
f ` ( x ) = 1 * ( - 3 - 0 ) = - 3
The equation of the tangent line:
y - f ( 0 ) = f ` ( 0 ) * ( x - 0 )
y - 5 = - 3 x
y = - 3 x + 5
The x - intercept of the tangent line:
0 = - 3 x + 5
3 x = 5
x = 5 / 3
or ( 5/3, 0 ) 

Related Questions

If deborah ran 3 2/5 miles on monday and on tuesday she ran 4 1/5 miles how many miles did she run on those two days together

Answers

3 2/5 + 4 1/5
3 + 4 = 7
2/5 + 1/5 = 3/5
The answer is 7 3/5
Hope this helps!

According to a magazine, a cleaning solution of 5% bleach will remove mildew from a shower or tub. a. How many ounces of bleach do you need to make a quart of 5% bleach solution? b. Explain the method you used using complete sentences. Whats the answer?

Answers

A quart is 32 ounces. The usual "bleach" is a 1.25% bleach solution, so you can't easily make a 5% solution from it. If you had pure "bleach" (usually sodium hypochlorite), you would need 5% of 32 ounces, which is 1.6 ounces of it. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

Eric bought 300 t-shirts, which were sold in packs of 12. how many packs did eric buy?

Answers

300 shirts divided by 12 shirts per packs equals number of packs

Find the perimeter of the figure below. Notice that one side length is not given.

Assume that all intersecting sides meet at right angles.
Be sure to include the correct unit in your answer

Answers

This is the answer and I guess you can understand it.

The perimeter of the figure is 58 feet if the missing side length is 10 feet.

What is perimeter?

It is defined as the length of the circumference or outline of the geometry. It is the sum of the all side measures.

We have a two-dimensional geometry in the picture with dimensions.

The missing side length  = 15 - 5 = 10 ft

The perimeter of the figure = 5+7+10+10+15+11

= 58 feet

Thus, the perimeter of the figure is 58 feet if the missing side length is 10 feet.

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If side a has a length of 3 and side b has a length of 4, use the pythagorean theorem to find the length of side
c. round the answer to the nearest tenth.

Answers

The Pythagorean theorem is a^2 + b^2 = c^2. So therefore, 3^2 + 4^2 = 9 + 16 = 25. √25 = 5, which is the length of c, hope this helps!

What is the lateral surface area of a cylindrical-shaped candle with a radius of 3 cm and a height of 15 cm? (Use 3.14 for .) A. 847.8 sq cm B. 45 sq cm C. 282.6 sq cm D. 339.12 sq cm

Answers

Answer:

its 282.6 sq cm

Step-by-step explanation:

AL=2πrh=2·π·3·15≈282.74334

is triangle EFG is congruent to triangle STU , what can you conclude about angle E, angle S, angle F and angle T

Answers

If triangle EFG is congruent to triangle STU, the following statements are true:

* Angle E = angle S.

* Angle F = angle T.

* Side EF = side ST.

* Side FG = side TU.

* Side EG = side SU.

If triangle EFG is congruent to triangle STU, then we can conclude that the following pairs of angles are congruent:

* Angle E is congruent to angle S.

* Angle F is congruent to angle T.

This is because congruent triangles have corresponding angles that are congruent.

We can also conclude that the following pairs of sides are congruent:

* Side EF is congruent to side ST.

* Side FG is congruent to side TU.

* Side EG is congruent to side SU.

This is because congruent triangles have corresponding sides that are congruent.

Therefore, the following statements are true:

* Angle E = angle S.

* Angle F = angle T.

* Side EF = side ST.

* Side FG = side TU.

* Side EG = side SU.

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What is the solution to the linear equation?

2/3x –1/2 = 1/3 +5/6 x

A. x=-5
B. x= - 1/6
C.x= 1/6
D. x=5

Answers

First, you want to make all your fractions have a common denominator. Your common denominator would be 6, so multiplying each /3 fraction by 2 and each /2 fraction by 3, you get 4/6x-3/6=2/6+5/6x. You can now combine your fractions getting (4x-3)/6=(2+5x)/6. Now, reduce out the fractions to get 4x-3=2+5x, subtract 4x from both sides, -3=2+x, subtract 2 from both sides, x=-5, or answer choice A.

Answer:

A) -5

Step-by-step explanation:

What is 1/10 of 2325

Answers

232.5 is 1/10 of 2325
1/10 of 2325 is 232.5

how do you get a total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator?

feel free to take a gander

Answers

Ok, the only way I can see this even working is kind of sketchy, but here goes:

Let's say that each of these zeroes are an object. so here, we have 5 zeros. Each of them counts as 1 object.

120 has 3 numbers: 1, 2 and 0. Let's say each of these numbers is their own respective quantity. So:

1 zero = 1 unit (1), 1 zero + 1 zero = 2 units (2), and for the last number, 1 zero - 1 zero = 0 units.

So we have used 5 zeroes and made the number 120. 

a polygon can grow from which of the following
a.one -dimensional objects
b.zero-dimensional objects
c.three-dimensional onjects? ...?

Answers

The best and most correct answer among the choices provided by your question is the third choice or letter C.

A polygon can grow to a three-dimensional object.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
Final answer:

A polygon can grow from one-dimensional objects, which are lines. Zero-dimensional objects, which are points or vertices, also play a role as they define the positions where lines meet, but a polygon cannot directly grow from three-dimensional objects because polygons are two-dimensional shapes.

Explanation:

A polygon can grow from one-dimensional objects, specifically from lines. In geometric terms, a polygon is a two-dimensional shape that is formed by connecting straight line segments. Each line segment connects to two others to form the polygon's perimeter. Moreover, the line segments join at their endpoints, known as vertices, which are zero-dimensional objects that contain only a single coordinate pair.

The formation of a polygon from lines is analogous to constructing a shape on a piece of paper by drawing lines that connect to form a closed loop. In this process, the lines are the sides of the polygon, and the points where the lines meet are the vertices. It is not possible for a polygon to directly grow from three-dimensional objects, as polygons are inherently two-dimensional.

For example, to represent a soccer ball in a simplified manner such as in geographic information systems (GIS), we can use polygons in the shape of pentagons and hexagons. The soccer ball itself is a three-dimensional object but the representation involving pentagons and hexagons is a two-dimensional schematic, emphasizing the importance of polygons in various mapping and modeling applications.

Draw a scatter plot that shows a person’s height and his or her age, with a description of any trends. Explain how you could use the scatter plot to predict a person’s age given his or her height. How can the information from a scatter plot be used to identify trends and make decisions?

Answers

Time is independent of height yet height depends on time, therefore x is age after 0 yrs and y is height in ft perhaps. Given the age, you can predict reasonable height based on records and history of the average height given x yrs. Furthermore one can employ a technique called linear regression on the scatter plot to run statistics. keep in mind that correlation isn't causation.

A scatter plot depicting height and age reveals trends: positive correlation if points slope up, negative if down, none if scattered. Regression lines aid age prediction from height. The plot guides decisions by identifying patterns and outliers, supporting informed conclusions based on observed relationships.

Steps to interpret a scatter plot of a person's height and age:

1. **Scatter Plot Description:**

  - Axes: Height on the y-axis, Age on the x-axis.

  - Each point represents an individual's height and age.

  - Scatter points may form a pattern or cluster.

2. **Trends and Interpretation:**

  - **Positive Correlation:** If the points generally slope upward from left to right, it suggests a positive correlation—taller people tend to be older.

  - **Negative Correlation:** If the points slope downward, it implies a negative correlation—taller people tend to be younger.

  - **No Correlation:** If the points seem randomly scattered, there may be no apparent correlation.

3. **Predicting Age from Height:**

  - Fit a regression line to the data. A linear regression line can be used to predict age given height.

  - For a given height, find the corresponding point on the regression line to estimate the age.

4. **Identifying Trends and Decision Making:**

  - **Patterns:** Identify patterns and correlations between variables.

  - **Outliers:** Notice any data points significantly deviating from the trend.

  - **Decision Support:** Use the trends to make informed decisions. For instance, if there's a correlation between height and age, you might anticipate certain health issues associated with age.

Scatter plots are powerful visual tools to analyze relationships between variables, identify trends, and make predictions or informed decisions based on observed patterns.

a major stadium has 45000 seats. if baseball fans have bought 5/8 of the seats for the next game, how many seats are available?

Answers

The answer is 16875 seats

Baseball fans have bought 5/8 of the seats: 5/8 * 45000 = 28125 seats

The number of available seats is the number of sold seats subtracted from the total number of seats:
45000 - 28125 = 16875 seats

Find an exact value. cos 15°

Answers

The exact value of cos 15° is (√6 - √2)/4.

To find the exact value of cos 15°, we can use the trigonometric identities and special angles to determine its value.

One of the key identities that can be used is the cosine addition formula: cos (A + B) = cos A x cos B - sin A x sin B.

We can rewrite 15° as the sum of two special angles: 15° = 45° - 30°.

Using the cosine addition formula, we have:

cos 15° = cos (45° - 30°) = cos 45° x cos 30° - sin 45° x sin 30°.

Now, we know the exact values of cos 45° (which is (√2)/2), cos 30° (which is (√3)/2), sin 45° (which is (√2)/2), and sin 30° (which is 1/2).

Substituting these values into the equation, we get:

cos 15° = (√2)/2 x (√3)/2 - (√2)/2 x 1/2.

Simplifying further, we have:

cos 15° = (√6 - √2)/4.

This means that cos 15° can be expressed exactly as (√6 - √2)/4 without any decimal approximation.

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Answer:

the answer is check2+check6/4

Step-by-step explanation:

i took an exam and got it right

(i dont know what those check mark things are called or how to put the actual thing on a computer so hopefully you understand the check part)

Find the difference.
3x2y - x2y

A. 2
B. 2x2y
C. 3x2y
D. 4x2y

Answers

B. 2x2y 
Subtract the two values

Two angles of a triangle measures of 70° and 85° which is not the measure of an exterior angle of the triangle

Answers

I hope this helps you

PLEASE HELP ME WITH THIS??
Homer the Hungry Hippo is munching on the lily pads in his pond. When he got to the pond,there were 30 lily pads,but he is eating 5 lily pads an hour. Henrietta the Hungry Hippo found a better pond with 38 lily pads! She eats 7 lily pads every hour. If Homer and Henrietta start eating at the same time,when will their ponds have the same number of lily pads remaining?

Answers

In 4 hours they will have the same amount of lily pads.
they will have the same number of lily pads at 0

What times what equels 108

Answers

54 times 2 equals to 108
1 x 108 = 108

2 x 54 = 108

3 x 36 = 108

4 x 27 = 108

6 x 18 = 108

9 x 12 = 108

hope this helps :)

Heathers desk is 3 feet long about how long is it in meters

Answers

0.914 meters
1 foot would equal 0.3048 meters
3*0.3048= 0.914
I'm pretty sure the answer is one

8/10 of 1 percent is equal to .008. TRUE or FALSE

Answers

[tex]\displaystyle \frac{8}{10} \cdot \frac{1}{100}= \frac{8}{1000}=0.008 [/tex]

True

how would you write this in scientific notation
0.2 x 10^6

Answers

The answer is 2 × 10⁵

Scientific notation is in a form: x × 10ⁿ, where x is a number from 1 to 9 and n is the number of decimal places.

0.2 = 2 / 10
1/xᵃ = x⁻ᵃ
2/10¹ = 2 × 10⁻¹

0.2 × 10⁶ = 2 × 10⁻¹ × 10⁶ 

xᵃ * xᵇ = xᵃ⁺ᵇ

0.2 × 10⁶ = 2 × 10⁻¹ × 10⁶ =  2 × 10⁻¹⁺⁶ = 2 × 10⁵

The number 0.2 x 10⁶ in scientific notation is written as 2 x 10⁵.

To write the number 0.2 x 10⁶ in scientific notation, we need to convert it into a format that has one non-zero digit to the left of the decimal point, followed by the appropriate exponent of 10.

The given number, 0.2 x 10⁶, is already close to scientific notation, however, we typically want the first number to be between 1 and 10. In this case, we can express 0.2 as 2 x 10⁻¹. Multiplying this by 10⁶ gives us:

2 x 10⁻¹ x 10⁶ = 2 x 10⁽⁶⁻¹⁾ = 2 x 10⁵.

So, the number 0.2 x 10⁶ in scientific notation is 2 x 10⁵.

When the function is given in vertex form y=a(x-h)2+k, how is the vertex found?

Answers

Once you have it in that form, you just read off the values of h and k

For instance, if you had y = 2(x-3)^2 + 5, then h = 3 and k = 5. So the vertex is (h,k) = (3,5)

Answer:

Given function is [tex]y=a(x-h)^2+k[/tex] ...........(1)

We re write the function,

transfer k to LHS,

[tex]y-k=a(x-h)^2[/tex]

Since, One variable has degree 2 and one variable has degree 1.

Function Represent the equation of Parabola.

In given Function,

Coordinates of vertex is ( h , k )

So To, find the vertex of the function.

First we rewrite the function in vertex form that is like equation (1) then we compare them and write the coordinate of the vertex.

For Example,

1. y = 2(x - 2)² + 6 then vertex of the function is ( 2 , 6 )

2. y = -3 ( x + 3 )² - 6

    y = - 3 ( x - (-3) )² + ( -6) then vertex of the function is ( -3 , -6 )

A sports store sells bicycle baskets at $40.00 for two. another sports store sells bicycle baskets at $110 for five. which store sells at the better rate?

Answers

divide the values to find the unit rate (ie the price per single item)

40/2 = 20
110/5 = 22

the first store sells each basket at $20
the second store sells each basket at $22

The first store is better since you save $2 per basket

The solution is store A

The store which sells the bicycle with a better rate is store A with a price of  $ 40.00 for two bicycles

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the first store be represented as A

Let the second store be represented as B

Now , the equation will be

The price of 2 bicycles at store A = $ 40.00

So ,

The price of 1 bicycle at store A = price of 2 bicycles at store / 2

Substituting the values in the equation , we get

The price of 1 bicycle at store A = 40/2

The price of 1 bicycle at store A = $ 20

Now ,

The price of 5 bicycles at store B = $ 110

So ,

The price of one bicycle at store B = The price of 5 bicycles at store B / 5

Substituting the values in the equation , we get

The price of one bicycle at store B = 110/5

The price of one bicycle at store B = $ 22

And ,

The price of one bicycle at store B > The price of 1 bicycle at store A

22 > 20

Hence , the store A provides better rate for the price of one bicycle

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Kenneth is inviting people to his parents' anniversary party and wants to stay at or below his budget of $6,000 for the food. The cost will be $40 for each adult's meal and $15 for each child's meal.
Select the inequality in standard form that describes this situation. Use the given numbers and the following variables.
x = the number of adults
y = the number of children

Answers

x= the number of adults
y=the number of children

Knenneth can´t afford more than $6000.

Therefore, the ineguality will be:
40x+15y≤6000

Answer: 40x+15y≤6000
_Award brainliest if helped!

40 per adult and 15 per child
so Price of x adult and y child is  40x + 15Y
His budget is 6000 So the Price must be at or below 6000
Hence, 40x + 15y ≤ 6000 

Your school has a $1200 grant to buy books and magazine subscriptions for the school library. The avarage cost of magazine subscription is $30. Your school decided to spend $870 on books and the remaining amout on magazine subscriptions. How many subscriptions can the school buy?

Answers

They can buy 11 magazine subscriptions.

There are four cars entered into a pinewood derby race. In how many different orders can they cross the finish line?

Answers

This question is answered by using the factorial formula. Therefore, the answer is 4! or 4*3*2*1 or 24. The correct answer is 24.

To find out the different orders four cars can finish a race, we calculate the permutations, which is 4 factorial, resulting in 24 different orders.

The student is asking about the number of different ways that four cars can finish a pinewood derby race, which is a question of permutations in mathematics. In this case, we want to find out the number of possible arrangements for the four cars crossing the finish line. Since each car is distinct, the number of permutations of four items is given by 4! (4 factorial), which is calculated as 4 × 3 × 2 × 1.

Therefore, there are 24 different orders in which the cars can cross the finish line. Remember, factorial is a mathematical operation that involves multiplying a sequence of descending natural numbers.

WHAT IS THE RECIPROCAL OF 5/8 WHOLE NUMBER OR FRACTION?

Answers

A reciprocal is just when you flip over the numerator and the denominator.
So, if you have 5/8, then its opposite, or reciprocal will be 8/5. It is also a fraction, as is 5/8.
You can write it as a mixed number, as the person above me mentioned, as 1 3/5. 

The reciprocal of the fraction 5/8 is 8/5.

We have,

Fraction:

5/8

Now,

To find the reciprocal of a fraction we write as,

x = 1/x

Now,

x = 5/8

So,

1/x

= 1/(5/8)

= 8/5

Thus,

The reciprocal of the fraction 5/8 is 8/5.

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What is the volume of a coffee can that is 6.5 inches high and has a diameter of 5 inches?

Answers

V=hpir^2
d/2=r

h=6.5
d/2=5/2=2.5

V=(6.5)(pi)(2.5)^2
V=(6.5)(pi)(6.25)
V=40.625pi in³ or aprox 127.627175 in³

Write an algebraic equation for the following. Three times the sum of a number and seven is two less than five times the number.

Answers

5x-4    x-3=14   4x + (-3)

A chicken soup recipe calls for 15cups of chicken stock how much is this in quarts

Answers

3.75 quart. Use can easily use google 
Final answer:

The question's topic is about converting volume from cups to quarts. In this particular case, 15 cups of chicken stock is equal to 3.75 quarts.

Explanation:

The subject of this question is the conversion of volume from cups to quarts. In this case, the chicken soup recipe calling for 15 cups of chicken stock needs to be converted into quarts. We know that 1 quart is equal to 4 cups, so we can set up the equation:

4 cups/1 quart = 15 cups/x quarts

To solve for x, we multiply 15 (cups) by 1 (quart) and then divide by 4 (the number of cups in a quart).

Therefore, x = (15*1)/4 = 3.75 quarts. So, 15 cups of chicken stock is equal to 3.75 quarts.

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